| 查看: 441 | 回复: 1 | |||
albert199010新虫 (小有名气)
|
[交流]
Manthiram组最新氧催化文章 已有1人参与
|
|
题目：Delineating the roles of Co3O4 and N-doped carbon nanoweb (CNW) in bifunctional Co3O4/ CNW catalysts for oxygen reduction and oxygen evolution reactions 关于氧催化催化剂中碳材料和金属氧化物的催化活性 摘要：While many synthesis methods have been reported for Co3O4–carbon nanocomposites as a bifunctional electrocatalyst for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) in alkaline solutions, the individual contributions of Co3O4 and CNW towards ORR and OER are still not clear. Here, we report the individual functionality of Co3O4 and the N-doped carbon nanoweb (CNW) in ORR and OER. The Co3O4/CNW bifunctional catalysts were synthesized by an in situ growth of Co precursors onto CNW followed by a controlled heat treatment. The specific functions of Co3O4 and CNW were delineated by rotating disk electrode measurements. It was found that Co3O4 alone exhibited poor ORR catalytic activity. However, in the presence of CNW, Co3O4 assisted the selective fourelectron oxygen reduction over the two-electron pathway. Analyses of the Tafel slope and reaction order suggested that Co3O4 acted as the primary catalytic site for OER. CNW improved the electronic conduction between Co3O4 and the current collector. CNW underwent serious degradation at the high potential of the OER but its stability improved greatly upon the deposition of Co3O4. Two possible mechanisms for the improved catalytic stability are discussed. The findings demonstrate the specific functions of Co3O4 and CNW in catalyzing the OER and ORR and further establish an understanding of the synergy of the composite in electrocatalysis. |
回复此楼» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : J._Mater._Chem._A_2015_Liu.pdf
2015-11-08 03:30:55, 1.81 M
» 猜你喜欢
上海工程技术大学生态与功能纺织品开发研究团队招收学硕专硕研究生
已经有0人回复
-
华南理工0703求调剂，总分336四六级已过
已经有2人回复
-
分析化学论文润色/翻译怎么收费?
已经有260人回复
-
青岛大学化学化工学院2026年招收调剂硕士研究生
已经有0人回复
-
新能源材料方向考研调剂招生（长江师范学院）
已经有0人回复
-
0854电子信息272求调剂！
已经有0人回复
-
化学-化工-材料-食品-生物-环境2026年研究生调剂（可以不考数学）
已经有0人回复
-
化学-化工-材料-食品-生物-环境-农业 2026年研究生调剂（可以不考数学）
已经有1人回复
-
070300一志愿211，312分求调剂院校
已经有4人回复
-
26年储能、电池方向博士申请
已经有0人回复
-
070300化学求调剂
已经有2人回复
» 本主题相关商家推荐: (我也要在这里推广)
2楼2015-11-08 03:39:20
